colter Meaning, Definition & Usage

  1. noun a sharp steel wedge that precedes the plow and cuts vertically through the soil
    coulter.

WordNet

Col"ter noun
Etymology
AS. culter, fr. L. culter plowshare, knife. Cf. Cutlass.
Definitions
  1. A knife or cutter, attached to the beam of a plow to cut the sward, in advance of the plowshare and moldboard. Written also coulter.

Webster 1913